Saeety-ahchoe



e. F. MINNIS.

SAFETY ANCHOR. APPLICATION. FILED AUG. I5. 1917.

* Patented Oct. 28,1919.

MEGS-56 .5;

[Fa e/i67 GEORGE E. MINNIS, OF CHICAGO, ILLINOIS.

SAFETY-ANCHOR.

, Specification of Letters Patent.

Patented Oct. 28, 1919.

Application filed August 15, 1917. Serial No. 186,279.

To all whom it may concern:

Be it known that I, GEORGE F. MINNIs, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Safety-Anchors, of which the following is a specification.

This invention relates to improvements in window washers safety appliances, and more particularly to a support for attachment to a metal window frame for engagement with the clips carried on the ends of a window-washers belt.

One of the objects of my invention is to provide a support or fastener for attachment to a window frame of the well known fenestra construction.

Another object of my invention is to provide a support for attachment at the juncture between a vertically positioned mullion and window sash. A further object is to provide a support which may be easily and quickly attached to the window frame without the necessity of drilling and tapping holes in the frame and which, at the same time will be securely and rigidly positioned without the possibility of its being broken off or torn from its position.

Still other and further objects will become readily apparent to those skilled in the art, upon a consideration of the followin specifications and drawings wherein;

igure 1 is a front elevation of a window frame showing my improved support, in posltion.

Fig. 2 is a vertical sectional view on the line 22 of Fig. 1.

Fig. 3 is a horizontal sectional view on the line 3-3 of Fig. 1.

Fig. 4 is a perspective view of my anchoring bolt.

n the well known fenestra construction of all metal window frames, the outwardly extending flanges of adjacent window sashes are connected to a vertically extending mullion of T shaped cross-section. At the intersection of the flanges of the window sash with the outwardly extending flanges on the mullion, it is customary to secure bolts or other supports for engagement with the window cleaners harness. These bolts usually project through registering openings in the mullions of the sash and are threaded to receive a nut on each side of the frame. In other constructions the frame is threaded to receive the threaded end of the bolt and the single nut engages the inwardly projecting end of the bolt to lock it in position.

With my improved construction the necessity of threading the opening in the frame is eliminated and but one nut is used. This is accomplished by providing a bolt or support having a stem of rectangular cross-sections for engagement with an opening in the outer of the two superposed plates, the outer end of the stem being provided with a head, and the inner end of the stem having a threaded extension, for projection through a hole in the inner plate of less area than the opening in the outer plate. A nut is threaded upon the inner end of the extension which locks the bolt in position. Referring now to the specific embodiment of the invention. which I have chosen to illustrate in the drawing for the purpose ofmaking a full and complete disclosure, the

numeral 10 indicates a vertically positioned I mullion having an outwardly projecting flange 11, and two oppositely extending flanges 12 and 13. The window sashes 11, carrying the glasses 15, each have outwardly extending flanges 16, which lie against the inner surfaces of the flanges 12 and 13 of the mullion. Suitably spaced apart bolts 17 secure the sash flanges 16 to the mullion flanges 12 and 13.

My improved support for a window cleaners clip, comprises a stem 18 of rectangular cross-section having at its outer end a head 19, and at its inner end a threaded extension 20, the extremity of which is notched at 21 so that a cold-chisel may be readily used to split the end of the threaded extension after the nut has been screwed home and thereby lock the nut in position as shown in the upper portion of Fig. 2.

The outwardly extending flanges 12 and 13 of the mullion are provided with the square openings 22, to receive the inner end of the squared stem 18. The stem 18 is slightly tapered toward the threaded end to permit its tightly interfitting with the squared opening in the mulhon. The sash flange 16 is perforated as at 23 for register with the opening 22 in the mullion, the perforation 23 being of less area than that of the squared opening in the mullion toprovide a shoulder against which the inner end of the stem 18 abuts. A nut 24 is screwed over the extension 20'drawing the squared stem into the squared opening in the mullion and rigidly holding the shoulder on the inner end of the stem in engagement with the shoulder formed between the two plates. The slotted end 21 of extension 20 is then hammered over as at 25 locking the support in position.

In Fig. 1, I have shown the spaced apart, headed extensions at the left side of the figure and at the right a window-washers clip indicated at 26 is shown in engagement with the support.

Whereas I have illustrated and described the single embodiment of my invention, it will be evident to those skilled in the art that various changes or modifications may made therein, without departing from the spirit of the invention or the scope of the appended claim.

Having described my invention, what I claim is In combination with a mullion of a window casing, flanges from the window casing overlapping the mullion and secured thereto, said mullion being perforated at suitable intervals with rectangular openings and said casing flanges also having smaller openings adapted to register with said rectangular openings, headed bolts for the support of a window qleaners harness, each bolt having ,rectangular shank and a reduced screw threaded end to enter the registering opening, the reducing of the end providing a shoulder to space the head away from the mullion, and a nut on the threaded end of said shank whereby to fasten said bolt to the window casing and prevent it from rotating, the length of the shank being sufficient to space the head away from the mullion for the purpose intended, and the rectangular part of the bolt closely fitting its rectangular opening to relieve the reduced screw threaded portion of breaking strain.

In testimony whereof I hereunto set my hand.

GEORGE F. MINNIS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington. D. 0. 

